Officials had proposed restricting direct sales to consumers, classifying the devices alongside nicotine patches and other smoking cessation products that require a prescription.

The European Parliament struck down that proposal, though, voting Tuesday to regulate them much as they do conventional cigarettes, with only the usual marketing, packaging, and 18-and-older age restrictions.

While the lawmakers also voted to tighten restrictions on smoking tobacco packaging and menthol flavoring, e-cigarettes were considered the main question.

The agency has said it will issue proposed regulations on e-cigarettes soon, a move that was widely expected by the end of October but may be delayed by shutdown-related furloughs at the chronically understaffed agency.

It tried to regulate e-cigarettes as medical devices but acquiesced in 2011 to an appeals court ruling that as long as no health claims are made for the products they only fit under the agency's authority to regulate tobacco.

Individual European Union member states have attempted to quash sales through tight regulation or outright bans, but these have typically been struck down by legal action.

The amended Tobacco Products Directive now has to be agreed upon by E.U. government ministers and voted on again by the parliament, but no meaningful opposition is expected.

These moves have been carefully watched as other public health agencies around the world are trying to get a handle on e-cigarettes, which are often targeted to smokers wanting to quit.

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